In the figure, mAB = 45° and mCD = 23°. The diagram is not drawn to scale.
What is the value of x?
A. 34°
B. 56.5°
C. 22°
D. 68°

Since tan is negative in the second quadrant, hence the direction angle for v is 98.13 degrees

The direction of a vector is the degree at which the vector is moving with respect to the horizontal.

Given the coordinate point (-3, 21), the direction is expressed as:

theta = arctan(y/x)

Substitute

theta = arctan(21/-3)
theta =arctan(-7)

theta = -81.7 degrees

Since tan is negative in the second quadrant, hence the direction angle for v is 98.13 degrees

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ANSWER

See attachment.

EXPLANATION

The cosine function is symmetric with respect to the y-axis.

If the cosine function has an amplitude of 2 then, its range is

-2≤y≤2

If the period is 2 , then its must complete a full cycle on the interval, [-2,0],[0,2], [2,4], etc.

The graph that has all these features is shown in the attachment.

Answer:

D

Step-by-step explanation:

The given function builds on the parent graphy = x^2.

The answer is D. y=x^2

Answer:

B

Step-by-step explanation:

The intercepted angle is given as "34x+4"

The arc is 196.

Any intercepted angle of an arc that falls in the opposite circumference, it will have a measure half that of the arc intercepted.

Hence,

34x+4 = (0.5)(196)

34x + 4 = 98

34x = 98 - 4

34x = 94

x = 94/34 = 2.76

Answer choice B is right.

1.Observation study

2.Survey

3.Experiment

4.Survey

Hope thiz help:)

In choosing between a survey, experiment, or observational study, consider the requirements of your study and the nature of the data you hope to collect. Surveys are good for widespread data, experiments allow control of variables, and observational studies are good for observing natural behavior.

The best way to gather information in research scenarios depends on the nature of the scenarios in question. However, here are brief descriptions for each method:

Depending on the scenario, choose the method that fits best with the data needed and the practical considerations of conducting the study.

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Answer:

There is no real number root

Step-by-step explanation:

There is no real number root because there is a negative number inside the root.

No real number root

Check the picture below.

approximately 0.3 or 3/10 pizza was left for Julio to eat.

mind you some numbers were rounded. if you want the exact number then it's 9/28 which is equal to 0.32.

hope this helps

After accounting for the amounts of pizza eaten by Julio's family (parents, brothers, and sisters), you find that there was approximately 0.36 pizzas left for Julio to eat.

This question deals with some basic arithmetic and fractions. Start by counting how many pizzas Julio's family ate altogether. His parents ate 3/7 of one pizza, his brothers ate 2 3/4 pizzas, and his sisters ate 2 1/2 pizzas.

To add these amounts together, you might find it easiest to convert all the fractions to sevenths. The brothers ate 2 4/7 pizzas (as 4/7 is equivalent to 1/2) and the sisters ate 2 3.5/7 pizzas (as 3.5/7 is equivalent to 1/2). Add these to the 3/7 pizza the parents ate, you find the family ate a total of approximately 5.64 pizzas.

Since Julio's family ordered 6 pizzas in total, you then subtract the total amount eaten by the family from 6, which is approximately 0.36 pizzas. Therefore, Julio was left with 0.36 pizzas to eat.

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Answer:

i have provided some pictures to help you i cant post the graphs though cuz they dont allow me to but if you need them i can send link pictures  :)

i also love you're Naruto profile picture uwu

Jeanne can use a system of inequalities to make at least $75.

Let X represent babysitting hours = $6 per hour.

Y represent tutoring hours = $10 per hour.

If she will work more 7.5hours or more than 7.5 hours she can make $75 easily.

$10 per hour × 7 hours = $70

& $6 per hour × 1 hour = $6

so, $70 + $6 = $76.

In the above way she can make easily $75.

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No there is no variability cause the answers will always be the same

this would be a non-stat question

Answer:

Median

Step-by-step explanation:

This set of data has an extreme outlier, which will throw off the mean. The median, on the other hand, does not change or changes minimally whether or not the outlier is there.

By default, the mean is always better, but if an outlier, such as this one, is too large, the median is better.

Answer:

d = 7.071068

Step-by-step explanation:

Answer:

She will receive [tex]\$5[/tex]

Step-by-step explanation:

step 1

Find the total cost

The total cost is equal to

[tex]5(\$6.00)+4(\$7.50)=\$60[/tex]

step 2

Find the difference

[tex]\$65-\$60=\$5[/tex]

Answer:

$5

Step-by-step explanation:

65-6x5-4x7.5=5

Answer:

The lateral area is [tex]4,608\pi\ in^{2}[/tex]  or  [tex]32\pi\ ft^{2}[/tex]

Step-by-step explanation:

we know that

The lateral area of a cylinder (pillar) is equal to

[tex]LA=2\pi rh[/tex]

Remember that

1 ft=12 in

Find the lateral area in square inches

we have

[tex]r=8\ in[/tex]

[tex]h=24\ ft[/tex] ----> convert to inches

[tex]h=24*12=288\ in[/tex]

substitute the values

[tex]LA=2\pi (8)(288)[/tex]

[tex]LA=4,608\pi\ in^{2}[/tex]

Find the lateral area in square feet

we have

[tex]h=24\ ft[/tex]

[tex]r=8\ in[/tex] -----> convert to feet

[tex]r=8/12=(2/3)\ ft[/tex]

substitute the values

[tex]LA=2\pi (2/3)(24)[/tex]

[tex]LA=32\pi\ ft^{2}[/tex]

Answer:

46°

Step-by-step explanation:

The mnemonic SOH CAH TOA reminds you ...

Cos = Adjacent/Hypotenuse

You are given the lengths of the hypotenuse of the triangle and the side adjacent to the angle you want to find. So, the cosine function describes the relationship:

cos(B) = AB/CB = (20 cm)/(29 cm)

B = arccos(20/29) ≈ 46.397°

B ≈ 46°

The student is looking for the value of an angle, m∠B, which requires solving an equation and rounding to the nearest integer. The provided information does not give a direct method or equation for calculating m∠B, thus an answer cannot be given confidently.

The student is asking to calculate the value of an angle, denoted as m∠B, to the nearest degree. This is a mathematics problem likely involving geometry or trigonometry.

In the information provided, different equations and scenarios for calculating angles and magnitudes are given, but they seem to be disconnected, and the specific question regarding m∠B isn't directly addressed by the provided equations and examples.

Without a direct relationship or equation including m∠B, or a diagram to reference, it is not possible to confidently provide the value of m∠B. However, the excerpts suggest that if we had an equation and needed to find an angle such as m∠B, we would solve the equation and then round the result to the nearest integer, as angles are typically given in integers when degrees of freedom are considered.

A circle, square and a line has a two fold symmetry.

A figure is said to be rotationally symmetric if when it is rotated along its axis remains the same. F

Given is to find the quotient when 6 is divided by 444.

If an object appears identical after a rotation of 180 degrees, that is twice in a 360 degrees rotation, then it is said to have a 2-fold rotation axis. A circle, square and a line has a two fold symmetry.

Therefore, a circle, square and a line has a two fold symmetry.

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The answer is D. 36pi units^3

Hope this helps!

The formula for cylinder volume is: pi*r^2*h

For this case we have that the volume of the cylinder is given by:

[tex]V = \pi * r ^ 2 * h[/tex]

Where:

h: It is the height of the cylinder

A: It is the radius of the cylinder

We have to, according to the given data:[tex]h = 4\\r = 3[/tex]

Substituting:

[tex]V = \pi * (3) ^ 2 * 4\\V = \pi * 9 * 4\\V = 36 \ pi[/tex]

[tex]36 \pi \ units ^ 3[/tex]

ANswer:

Option D

[tex]36 \pi \ units ^ 3[/tex]

Answer:

its going to have to be option c

Step-by-step explanation:

because it shows all the listings of cars next to her

Answer:  D) sample: local listings and internet sites

                    population: all used passenger cars

Step-by-step explanation:

A sample is a subset of items from a larger population.

A population includes all of the elements from a set of data.

Cynthia wants to buy a used passenger car.

All available used cars is the POPULATION

Cynthia looks at local listings and on internet sites.

This is a subset of all available used cars so this is the SAMPLE

Furthermore, she may not find what she is looking for and may expand her subset to include used car lots, etc.

Answer:

  b = 10

Step-by-step explanation:

a) Solve by inspection. b=10 makes both fractions equal to 1.

Both the numerator and denominator of the fraction on the right are 2 greater than those of the fraction on the left. The fractions will be equal when numerator and denominator are equal.

__

b) Multiply by 60 and solve in the usual way.

  6b = 5(b+2)

  b = 10 . . . . . . . . . . subtract 5b

__

c) Expand the fraction on the right, subtract the variable term.

  b/10 = b/12 + 2/12

  b(1/10 - 1/12) = 1/6

  b/60 = 1/6 . . . . simplify

  b = 60/6 = 10 . . . . multiply by 60

_____

Comment on the question

There is no "y", so you cannot solve for y. This is another example of poor quality control (editing) of math curriculum materials. It is my sincere wish that you not have to put up with that. Math is tough enough without this added confusion.

Answer:

b=10

Step-by-step explanation:

Answer:

the total available area = (3x^2 + 4x + 1) - (2x^2 + 8x + 8) = x^2 - 4x - 7

Step-by-step explanation:

The question seems to ask available area and not how much wallpaper is required. Let's calculate the area of the rectangular window. Area of a rectangle = Length * Breath Area = (x + 2) * (x + 1) = x^2 + 3x + 2 The wall also has a built- in shelving unit that occupies an area of (x^2 + 5x + 6). So total area occupied by the rectangular wall and shelf is (x^2 + 3x + 2) + (x^2 + 5x + 6) = 2x^2 + 8x + 8. If the wall is to be covered with wallpaper

Sorry for the wait

Answer:

Vol. of the composite figure is 189 m³

Step-by-step explanation:

Find the volume of the larger figure by mult. together its 3 dimensions:

V = (9 m)(8 m)(3 m) = 216 m³.

Next, find the volume of the "notch," which is (3 m)³, or 27 m³.

Finally, subtract the "notch" volume from the 216 m³ volume found earlier:

216 m³ - 27 m³ = 189 m³

Answer: 414.48

Step-by-step explanation:

r: the radius of the base

h: height

The volume of a cone is given by:

V = π ∙ r2 ∙ h / 3,

where π ∙ r2 is the base area of the cone.

π defines the ratio of any circle's circumference to its diameter and is approximately equal to 3.141593, however the value 3.14 is often used.

Answer:

V = 414.7 m3

Step-by-step explanation:

Thats your answer :))

Answer:

11.1 years

Step-by-step explanation:

The formula for interest compounding continuously is:

[tex]A(t)=Pe^{rt}[/tex]

Where A(t) is the amount after the compounding, P is the initial deposit, r is the interest rate in decimal form, and t is the time in years.  Filling in what we have looks like this:

[tex]2000=1150e^{{.05t}[/tex]

We will simplify this first a bit by dividing 2000 by 1150 to get

[tex]1.739130435=e^{.05t}[/tex]

To get that t out the exponential position it is currently in we have to take the natural log of both sides.  Since a natural log has a base of e, taking the natual log of e cancels both of them out.  They "undo" each other, for lack of a better way to explain it.  That leaves us with

ln(1.739130435)=.05t

Taking the natural log of that decimal on our calculator gives us

.5533852383=.05t

Now divide both sides by .05 to get t = 11.06770477 which rounds to 11.1 years.

Answer:

B

Step-by-step explanation:

This is easier to follow if you write it out the long way.

g(x) = (x + 3)/x

g(f(x)) = (f(x) + 3)/f(x)

g(x^2 - 7) = (x^2 + 7 + 3)/(x^2 + 7)

g(x^2 - 7) = (x^2 +10 ) / (x^2 + 7)

g(-5) = ( (-5)^2 + 10) / ( (-5)^2 + 7)

g(-5) = ( 25 + 10) / (25 + 7)

g(-5) = 35/32

Answer:

see explanation

Step-by-step explanation:

There are 2 possible positions for n, that is

- 2 - 1.5 = - 3.5

OR

- 2 + 1.5 = - 0.5

Both are 1.5 units distance from - 2

The possible values of n are -0.5 and -3.5

Step-by-step explanation:

Analyze two cases

1) n-(-2)=1.5

Solve for n

n+2=1.5

n=1.5-2

n=-0.5

2) -2-n=1.5

n=-2-1.5

n=-3.5

Answer: I believe it is 33 seats

Step-by-step explanation:

Answer:

516

Step-by-step explanation:

Answer:

The length of the escalator ≈ 1088.8 ft ⇒ answer (b)

Step-by-step explanation:

* Lets explain the problem

- Consider the escalator and the vertical raise formed a right

 angle triangle

- The length of the escalator is the hypotenuse

- The vertical rise is on leg of the right triangle

- The angle of elevation is the angle between the hypotenuse

  and the horizontal

* Now lets solve the problem

∵ Angle of elevation = 10° 21' 36"

∵ Vertical distance = 195.8 feet

* The vertical is opposite to the angle of elevation

∴ sin angel of elevation= the vertical/the length of the escalator

∴ sin(10° 21' 36") = 195.8/the length of the escalator

- By using cross multiplication

∴ The length of the escalator = 195.8/sin(10° 21' 36") = 1088.8 feet

* The length of the escalator = 1088.8 ft

[tex]\vec r(t)=t^2\,\vec\imath+t^3\,\vec\jmath-2t\,\vec k[/tex]

[tex]\mathrm d\vec r=(2t\,\vec\imath+3t^2\,\vec\jmath-2\,\vec k)\,\mathrm dt[/tex]

[tex]\vec f(x,y,z)=(x+y^2)\,\vec\imath+xz\,\vec\jmath+(y+z)\,\vec k[/tex]

[tex]\vec f(x(t),y(t),z(t))=(t^2+t^6)\,\vec\imath-2t^3\,\vec\jmath+(t^3-2t)\,\vec k[/tex]

The line integral is

[tex]\displaystyle\int_C\vec f\cdot\mathrm d\vec r=\int_0^2\bigg((t^2+t^6)\,\vec\imath-2t^3\,\vec\jmath+(t^3-2t)\,\vec k\bigg)\cdot(2t\,\vec\imath+3t^2\,\vec\jmath-2\,\vec k)\,\mathrm dt[/tex]

[tex]=\displaystyle\int_0^2(2t^7-6t^5+4t)\,\mathrm dt=\boxed{8}[/tex]

Given:

[tex]\to \bold{\int_{c} \ F \cdot dx}[/tex]

Where

[tex]\to \bold{F(x,y,z)=(x+y^2)i+xzj+(y+z)K}[/tex] and C is given by the vector function [tex]\bold{r(t)}[/tex].

[tex]\to \bold{r(t)=t^2i+t^3j-2tk,\ \ 0\leq t\leq 2}\\\\\to \bold{dx=(2ti+3t^2j-2k)dt}\\\\[/tex]

therefore

[tex]\to \bold{x=t^2}\\\\ \to \bold{y=t^3}\\\\ \to \bold{z=2t}\\\\\to \bold{F(r)=(t^2+(t^3)^2)i+t^2(-2t)j+(t^3-2t)k}\\\\[/tex]

            [tex]\bold{=(t^2+t^6)i-2t^3j+(t^3-2t)k}\\\\[/tex]

[tex]\bold{\therefore}\\\\\bold{F(r).dx=((t^2+t^6)i-2t^3j+(t^3-2t)k).(2ti+3t^2j-2k)}\\\\[/tex]

             [tex]=\bold{((t^2+t^6)2t-2t^3(3t^2)+(t^3-2t)(-2)]dt}\\\\=\bold{(2t^3+2t^7-6t^5-2t^3+4t)dt}\\\\=\bold{(2t^7-6t^5+4t)dt}\\\\[/tex]

Calculating the line integral:

[tex]\bold{\int_{c}\ F .dx=\int^{2}_{t=0} (2t^7-6t^5+4t)dt}\\\\[/tex]

               [tex]=\bold{[\frac{t^8}{4}-t^6+2t^2]^{2}_{0}}\\\\=\bold{\frac{2^8}{4}-2^6+2(2)^2}\\\\=\bold{\frac{256}{4}-64+2(4)}\\\\=\bold{64-64+8}\\\\=\bold{8}[/tex]

Therefore the final answer "8".

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Answer:

Last option

[tex]f(t)=sin(\pi(t -3)) + 4[/tex]

Step-by-step explanation:

The general sine function has the following form  

[tex]y = Asin(bt-\phi) + k[/tex]

Where A is the amplitude: half the vertical distance between the highest peak and the lowest peak of the wave.  

[tex]\frac{2\pi}{b}[/tex] is the period: time it takes the wave to complete a cycle.

k is the vertical displacement.

[tex]\phi[/tex] phase shift

We know that:

amplitude: 1; period: 2; phase shift: 3; vertical shift: 4

Thus:

[tex]A =1[/tex]

[tex]\frac{2\pi}{b}=2[/tex]

[tex]b=\pi[/tex]

[tex]\phi=3[/tex]

[tex]k=4[/tex]

Then the function is:

[tex]f(t)=sin(\pi(t -3)) + 4[/tex]

The answer is last option

The true annual interest rate for this loan is approximately 1.44 or 144%.

The Breakdown

To calculate the true annual interest rate, we can use the formula for calculating the interest rate on a loan:

True Annual Interest Rate = [(Monthly Payment Amount × Number of Payments) / Loan Amount - 1] × 12

Given the information provided:

Loan Amount = $3,000

Number of Payments = 36

Monthly Payment Amount = $93.33

Substituting these values into the formula:

True Annual Interest Rate = [(93.33 × 36) / 3000 - 1] × 12

Calculating this expression:

True Annual Interest Rate = [(3360 / 3000) - 1] × 12

True Annual Interest Rate = (1.12 - 1) × 12

True Annual Interest Rate = 0.12 × 12

True Annual Interest Rate = 1.44

Therefore, the true annual interest rate for this loan is 1.44 or 144%.